Synonyms:
(6r)-6-(phenylacetylamino)penicillanic acid 4-oxide ; (2s,5r,6r)-3,3-dimethyl-4,7-dioxo-6-(2-phenylethanoylamino)-4$l^{4}-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid ; benzylpenicillinsulfoxide ; penicillin g sulfoxide ; penicillin g sulphoxide ; (2s,5r,6r)-3,3-dimethyl-4,7-dioxo-6-[(2-phenylacetyl)amino]-4$l^{4}-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid ; [2s-(2alpha,5alpha,6beta)]-3,3-dimethyl-7-oxo-6-(phenylacetamido)-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid 4-oxide ; (2s,5r,6r)-4,7-diketo-3,3-dimethyl-6-[(2-phenylacetyl)amino]-4$l^{4}-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid
